---
product_id: 447488187
title: "Happybuy Air-Operated Double Diaphragm Pump 1 inch Inlet Outlet Aluminum 35 GPM Max 120PSI, Nitrile Diaphragm, QBY4-25L-1inch-35"
brand: "happybuy"
price: "6573 kr"
currency: DKK
in_stock: true
url: https://www.desertcart.dk/products/447488187-happybuy-air-operated-double-diaphragm-pump-1-inch-inlet-outlet
store_origin: DK
region: Denmark
---

# Aluminum alloy corrosion-proof housing 35 GPM max flow rate 120 PSI max pressure Happybuy Air-Operated Double Diaphragm Pump 1 inch Inlet Outlet Aluminum 35 GPM Max 120PSI, Nitrile Diaphragm, QBY4-25L-1inch-35

**Brand:** happybuy
**Price:** 6573 kr
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your workflow with unstoppable pumping power!

## Quick Answers

- **What is this?** Happybuy Air-Operated Double Diaphragm Pump 1 inch Inlet Outlet Aluminum 35 GPM Max 120PSI, Nitrile Diaphragm, QBY4-25L-1inch-35 by happybuy
- **How much does it cost?** 6573 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/447488187-happybuy-air-operated-double-diaphragm-pump-1-inch-inlet-outlet)

## Best For

- happybuy enthusiasts

## Why This Product

- Trusted happybuy brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Durable aluminum alloy body with premium nitrile diaphragms resists corrosion and wear.
- • **Industry-Ready Design:** Robust 1-inch inlet/outlet ports and 120 PSI max pressure meet demanding industrial needs.
- • **Precision Air Control:** Advanced stainless steel modular air valve ensures smooth, low-pulsation operation.
- • **Versatile Fluid Handling:** Compatible with a wide range of liquids including chemicals, oils, and detergents.
- • **Powerful Flow Performance:** Delivers up to 35 gallons per minute for rapid fluid transfer.

## Overview

The Happybuy Air-Operated Double Diaphragm Pump features a corrosion-resistant aluminum alloy housing and premium nitrile diaphragms, delivering up to 35 GPM flow at 120 PSI. Its advanced stainless steel air valve ensures smooth, efficient operation with minimal downtime. Designed for versatility, it handles diverse fluids across industries like petroleum, mining, and water treatment, making it a reliable powerhouse for professional applications.

## Description

Happybuy Air-Operated Double Diaphragm Pump 1 inch Inlet Outlet Aluminum 35 GPM Max 120PSI for Chemical Industrial Use, QBY4-25L-1inch-35

## Features

- Premium Double Nitrile Diaphragms: Our air-operated double diaphragm pump adopts nitrile diaphragms, durable, corrosion-proof, and long-lasting. Max. Temperature: 150 ℉/66 ℃; Max. Pressure: 120 psi; Max. Flow Rate: 39.6 GPM; Max Head Lift：275.6 ft/84 m.
- Sturdy & Leak-proof Construction: The diaphragm pump housing is made of aluminum alloy material, bolted against leakage, sturdy, and corrosion-proof for long-time use.
- Excellent Air-operated Performance: Inlet/Outlet Port Size: 1 inch; Air Inlet Size: FNPT 1/2 inch. A high-quality glyd ring, the double-acting sealing, strengthens air performance.
- Unique & Professional Designs: Our double diaphragm pump features an externally available air distribution system. The modular air valve is stainless. This low pulsation air valve provides smooth and rapid changeover for increased efficiency and minimizes downtime.
- Wide Applications: This diaphragm pump can handle various fluids, such as waste oil, alcohol, hydraulic fluid, gasoline, diesel, detergent, drink, and so on. It is widely used in many industries, such as petroleum, metallurgy, mining, coating, printing, water treatment, and automobile.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Happybuy |
| Part number | diaphragm pump |
| Item Weight | 8.62 Kilograms |
| Product Dimensions | 19.81 x 17.78 x 83.82 cm; 8.62 kg |
| Item model number | QBY4-25L |
| Size | 35GPM AL Alloy Nitrile Rubber |
| Color | Black |
| Style | Diaphragm |
| Material | Aluminum |
| Power source type | Air-Operated |
| Item Package Quantity | 1 |
| Flow Rate | 35 Gallons Per Minute |
| Included components | 1 x Air-Operated Double Diaphragm Pump, 1 x User Manual |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Brand:** Happybuy
- **Colour:** Black
- **Material:** Aluminum
- **Style:** Diaphragm
- **Product dimensions:** 19.8L x 17.8W x 83.8H centimeters

## Images

![Happybuy Air-Operated Double Diaphragm Pump 1 inch Inlet Outlet Aluminum 35 GPM Max 120PSI, Nitrile Diaphragm, QBY4-25L-1inch-35 - Image 1](https://m.media-amazon.com/images/I/71I0xqMpiZL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Will this pump go on neutral when you close the valves?**
A: This pump is pneumatic. The material is pushed in one direct when the air valve is turned on.

**Q: Where woukd i find a rebuild  kit for this pump if i needed one? Any part numbers or kits?**
A: I am having the same problem no parts available as far as I can see I have been searching for hours and still no luck.

**Q: Do you have 3" or 4"**
A: 2”

**Q: rebuild kit for qpk15?**
A: Just because you put a question mark at the end of a statement doesn't make it a question. I recommend looking at previously answered questions. This is a cheap Chinese clone of an industrial pump. If you need rebuilt kits, buy a pump from a pump supply company.

## Frequently Bought Together

- Happybuy Air-Operated Double Diaphragm Pump 1 inch Inlet Outlet Aluminum 35 GPM Max 120PSI, Nitrile Diaphragm, QBY4-25L-1inch-35
- SAFBY 2 PCS Aluminum Global Type F Cam and Groove Hose Fitting, Plug x NPT Male with 2 PCS Camlock Gasket Fitting (1")
- Quafwia 2 pcs Aluminum Camlock (1" part D) Cam & Groove Hose Fittings, cam Lock Fittings Female Coupler x Female NPT Thread cam Lock Fittings camlock Coupling (1'')

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.dk/products/447488187-happybuy-air-operated-double-diaphragm-pump-1-inch-inlet-outlet](https://www.desertcart.dk/products/447488187-happybuy-air-operated-double-diaphragm-pump-1-inch-inlet-outlet)

---

*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-01-30*